Examinando por Autor "Fossi, Cleiver A."
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Ítem A computational approach for Leishmania genus protozoa detection in bone marrow samples from patients with visceral Leishmaniasis(Saber UCV, Universidad Central de Venezuela, 2020) Isaza-Jaimes, Angélica; Bérmudez, Valmore; Bravo, Antonio; Sierra Castrillo, Jhoalmis; Hernández Lalinde, Juan Diego; Fossi, Cleiver A.; Flórez, Anderson; Rodríguez, Johel E.This article reports a three-stage computational approach for the automatic detection of Leishmania protozoan in light microphotograph from bone marrow samples extracted from patients with visceral Leishmaniasis. The first stage corresponds to the pre-processing of the microscopy images, in which initially a low-pass filter or softener was applied to attenuate the undesired information associated with the images and preserve the edges in the objects contained in the images. The pre-processing stage concluded with the applica tion of consistent gradient operators to the smoothed images to emphasise the changes of the intensities associated with the protozoa edges by determining the gradient module. In the second stage, a procedure-oriented to the selection of regions of interest that were candidates to contain parasites in the pre-processed images was developed, based on the intensity analysis associated with a set of intensity profiles selected from the smoothed images. In the final stage, each region of interest containing protozoa was analysed on the gradient module by a technique based on polar maps, to clas sify its content as a parasite of the genus Leishmania or not. The application of the proposed computational approach to a set of samples of patients with Visceral Leishmaniasis generated a recognition parasite percentage of approximately 80%Ítem Information and communication technology incorporation for business competitiveness in Norte de Santander’s mining sector(Wanming ZHAI, 2023) Hernandez Carrillo, Geraldine; Hernandez Peña, Yurley Karime; Fossi, Cleiver A.; Ortiz-Padilla, MyriamCurrently, Information and Communications Technology (ICTs) are considered great allies in chalking up business strategies, and it has been known that thanks to it, different productive and service sectors have been benefiting in different ways such as increased productivity, improvements in the quality of work of employees, and streamlining of processes, among others. This study aims to describe the current situation of the use of ICTs by the mining sector in Norte de Santander (Northeastern Colombia) and the impact on competitiveness. The developed methodology derives from the positivist paradigm, implementing a quantitative approach. This study was based on an analysis carried out by the mining companies of Norte de Santander on the use of ICTs, and the information was collected through the application of surveys. From the results obtained by applying the data from the surveys to the running of companies, it could be inferred that companies in the mining sector of Norte de Santander have shortcomings in terms of including ICTs in business strategies and in the use of these tools for employee training. On the other hand, the use of basic technologies and the competitiveness in the supply and demand of products and services are at a medium level. In conclusion, mining companies fail to take advantage of the potential that ICTs offer in the business world, which today is a necessity for competitiveness in a global context marred with crises like the ones caused by the COVID-19 pandemic.